Home / 820,090.52-1,229,138.47-580,273.53

Finding the Fourth Proportional to 820,090.52, 1,229,138.47 and 580,273.53

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Solution

The fourth proportional to 820,090.52, 1,229,138.47 and 580,273.53 is: 869,704.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,090.52 : 1,229,138.47 = 580,273.53 : x
  2. Step 2: Convert to fraction form
    820,090.52/1,229,138.47 = 580,273.53/x
  3. Step 3: Cross multiply
    820,090.52x = 1,229,138.47 × 580,273.53
  4. Step 4: Simplify right side
    820,090.52x = 713,236,518,845.70
  5. Step 5: Solve for x
    x = 713,236,518,845.70/820,090.52
  6. Step 6: Final answer
    x = 869,704.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.